what sort of boat is it?

Salvage rights-much more complex than people think! My understanding

1/ A boat must be "abandoned"-not just broken a mooring or dragged its anchor etc. Not even just when the crew jump off cos they think its gonna sink and it doesnt (or does even!)

Basically I think-the owner actually doesnt want it anymore

2/ Large commercial vessels use whats called "Lloyds Open Form".

When a captain realises he has no little or no hope of saving his vessel he gives (via radio) permission ("Do you accept Lloyds Open Form") to another vessel/salvage tug to do whatever it takes assist. I think its on the basis of "No cure no pay". 

But when its successful both parties go before a Salvage Board at Lloyds of London who decide how much the salvor gets taking into account risk, outlay etc-they are also accepting risk of any oil spill etc from that moment on.

I remember a mate I fished with had a wetliner up north and he got a call from the Police saying that it had broken its mooring and was in the mangroves, and a couple of dodgy locals were trying to get it out to claim salvage rights. Police said we'll let them get it out then take it back  , exactly what happened!

I was always told by the old fishermen that if you break down etc and need a tow, ALWAYS use your own rope.

If there is a dispute over payment, terms etc you can cut your own rope, but not someone elses.

Im sure there are others who can add/correct me though-the VMR guys may know abit more?